US20030202224A1 - Image pick-up device - Google Patents
Image pick-up device Download PDFInfo
- Publication number
- US20030202224A1 US20030202224A1 US10/419,738 US41973803A US2003202224A1 US 20030202224 A1 US20030202224 A1 US 20030202224A1 US 41973803 A US41973803 A US 41973803A US 2003202224 A1 US2003202224 A1 US 2003202224A1
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- United States
- Prior art keywords
- image pick
- unit
- subject
- light source
- cathode tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00249—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a photographic apparatus, e.g. a photographic printer or a projector
- H04N1/00267—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a photographic apparatus, e.g. a photographic printer or a projector with a viewing or projecting apparatus, e.g. for reading image information from a film
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
- H04N1/0285—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array in combination with at least one reflector which is in fixed relation to the light source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02845—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array
- H04N1/0287—Means for illuminating the original, not specific to a particular type of pick-up head using an elongated light source, e.g. tubular lamp, LED array using a tubular lamp or a combination of such lamps
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
- H04N1/02885—Means for compensating spatially uneven illumination, e.g. an aperture arrangement
- H04N1/0289—Light diffusing elements, e.g. plates or filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/04—Scanning arrangements
- H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
- H04N2201/0436—Scanning a picture-bearing surface lying face up on a support
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Accessories Of Cameras (AREA)
- Studio Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
An image pick-up device includes an image pick-up unit 3 for shooting a subject 2 in a desired direction, a light source unit composed of a circular type cold-cathode tube 4 fixed to a predetermined portion of the image pick-up unit 3 in such a way that an illuminating direction of the light source unit 3 is substantially coincident with a shooting direction of the image pick-up unit 4 and a support light source unit 5 housed in an arm 6 for supporting the image pick-up unit 3. The subject 2 to be shot by the image pickup unit 3 is always illuminated with light from the circular type cold-cathode tube 4.
Description
- 1. Field of the Invention
- The present invention relates an image pick-up device and, in particular, to an image pick-up device (picture and calligraphic camera) for providing an optical image (digital data) representative of photo, book, document, teaching material, solid material or similar subject to an external device as an input image thereof.
- 2. Description of the Prior Art
- An image pick-up device for providing an image of a subject kept at hand to an output device such as CRT, liquid crystal display or projector or an external device of such as a computer has been known. Since such image pick-up device can enlarge and project an image of a subject at hand by a liquid crystal projector, it has been popularly utilized by organizations for the purpose of conference and/or presentation. In utilizing the image pick-up device of such kind, it is usual to extinguish illumination of a room, irradiate the subject laid on the image pick-up device with light from a light source mounted thereon and pick-up an image of the subject by means of a camera.
- FIG. 1 is a perspective view of a conventional image pick-up device. The image pick-up device shown in FIG. 1 has a box-like construction including a substantially square subject mounting table101 on which a
subject 102 is mounted, an illumination system composed oflight source units subject 102 for illuminating the latter and an image pick-up unit (camera) 103 arranged to look down thesubject 102. Thelight source units up unit 103 are supported by one ends ofarms arm stage 107 is provided on one edge portion of the subject mounting table 101 and the other ends of thearms arm stage 107, respectively, and the other end of thearm 106 is supported in substantially a center portion of thearm stage 107. - The
light source unit 104 a takes in the form of a rod-like fluorescent lamp having one end rotatably mounted on the one end portion of thearm 105 a. Thelight source unit 104 b has the same structure as that of thelight source unit 104 a and one end thereof is rotatably mounted on the one end of thearm 105 b. Thearms arm stage 107, respectively. By regulating rotation angles of thelight source units arms subject 102 within a certain range. - The image pick-
up unit 103 is rotatably mounted on the one end portion of thearm 106 and thearm 106 can rotates in a plane orthogonal to the coplanar plane about the center portion of thearm stage 107. By regulating rotation angles of the image pick-up unit 103 and thearm 106, it is possible to change height of the image pick-up unit 103 and a shooting angle of the image pick-up unit 103 with respect to thesubject 102 within certain ranges, respectively. - The image pick-up device further includes various functions such as functions necessary for a transmission of an image data taken-in by the image pick-
up unit 103 to external output devices such as a projector. - When the
subject 102 mounted on the subject mounting table 101 is to be shot by the image pick-up unit 103, a surface of thesubject 102, which is to be shot, is illuminated by thelight source units arms subject 102 is shot in a desired direction by regulating the angles of the image pick-up unit 103 and thearm stage 107. The image pick-up unit 103 usually has a zooming function and an image data having a suitable size can be obtained by using the zooming function. - FIG. 2 shows another conventional image pick-up device. Although, in the image pick-up device shown in FIG. 1, the illumination system is composed of the
light source units light source unit 104. Since portions of the image pick-up device shown in FIG. 2 other than the illumination system are the same as those of the image pick-up device shown in FIG. 1, only the illumination system shown in FIG. 2 will be described. - The
light source unit 104 is a rod-like fluorescent lamp having one end hinged to substantially a center portion of anarm 106, which supports an image pick-up unit 103, by using arotary hinge 108, so that thelight source unit 104 can rotate about thehinge 108. Therefore, when illumination is unnecessary, thelight source unit 104 can be folded up on a backside of thearm 106 by rotating thelight source unit 104 about thehinge 108. - However, the conventional image pick-up devices shown in FIG. 1 and FIG. 2 have the following problems.
- In the image pick-up device shown in FIG. 1, since the
light source units subject mounting plate 101 with thearms arms - Further, in shooting the
subject 102, the operator must perform the angle regulation of thelight source units arms up unit 103 and the arm. 106. This requires a considerable amount of sophisticated work. - In the image pick-up device shown in FIG. 2, the problem that the
arm 106 becomes obstacle in changing the subject does not exist since thelight source unit 104 is mounted on thearm 106 supporting the image pick-up unit. However, the angle regulations of the image pick-up unit 103 and thearm 106 in addition to the angle regulation of thelight source unit 104 in shooting thesubject 102 are troublesome. - Further, when the
subject 102 takes in the form of, for example, a pipe and an inner surface of the pipe is to be shot, there is a problem that light from thelight source unit 104 can not sufficiently illuminate the inner surface of the pipe since positions of the image pick-up unit 103 and thelight source unit 104 are considerably different. - An object of the present invention is to provide an image pick-up device, which is capable of illuminating even an inner surface of a cylindrical subject such as a pipe and has high freedom in design of the image pick-up device and superior operability thereof.
- In order to achieve the above object, an image pick-up device according to the present invention is featured by comprising image pick-up means for shooting a subject in a desired direction and illumination means fixed to a predetermined portion of the image pick-up means and having an illuminating direction substantially coincident with the shooting direction of the image pick-up device.
- The illumination means may include a cold-cathode tube arranged such that it surrounds an outer periphery of the predetermined portion of the image pick-up means.
- Further, the illumination means may further include a reflector, which substantially encloses the cold-cathode tube and emits illumination light including direct light from the cold-cathode tube and light reflected thereby in a predetermined direction and a sheet member for scattering and diffusing the illumination light emitted from the reflector.
- The cold-cathode tube may be a circular type cold-cathode tube.
- The image pick-up device may further include an arm for supporting the image pick-up means, auxiliary illumination means housed in the arm for illuminating the subject and switch means for switching illumination between the illumination means and the auxiliary illumination means.
- In the latter case, the auxiliary illumination means may include a linear type cold-cathode tube, a reflector, which substantially encloses the linear type cold-cathode tube and emits illumination light including direct light from the linear type cold-cathode tube and light reflected thereby in a predetermined direction, and support means for rotatably supporting the reflector of the auxiliary illumination means.
- In the present invention, the illumination means is fixed to the predetermined portion of the image pick-up device in such the way that the illuminating direction thereof is substantially coincident with the shooting direction of the image pick-up means. According to this construction, the illuminating direction is always the same as the direction of the image pick-up means. Therefore, the operator is required to regulate only the shooting direction of the image pick-up means without regulation of the illuminating direction. Further, the arm does not become obstacle in changing the subject since only the arm for supporting the image pick-up means is required, unlike the image pick-up device shown in FIG. 1.
- When an interior of a cylindrical subject is shot by the image pick-up device having the illumination means composed of the cold-cathode tube substantially surrounding the outer periphery of the predetermined portion of the image pick-up means, light from the cold-cathode tube reaches the interior. Therefore, it is possible to clearly pick up an image of the interior of the cylindrical subject.
- With using the sheet member in the image pick-up device, the amount of light emitted from the illumination means can be made uniform by scattering and diffusing light emitted from the reflector by means of the sheet member.
- With using the auxiliary illumination means, the illumination system is switched to the auxiliary illumination means when the illumination means causes halation. The illuminating direction of the auxiliary illumination means is much different from the shooting direction of the image pick-up means. Therefore, even if light from the auxiliary illumination means is regularly reflected by the subject, the reflected light is not incident on the image pick-up means. Therefore, halation does not occur.
- FIG. 1 shows a conventional image pick-up device;
- FIG. 2 shows another conventional image pick-up device;
- FIG. 3 shows an image pick-up device according to an embodiment of the present invention;
- FIG. 4 is a cross sectional view of a portion including an image pick-up unit and a circular type cold-cathode tube shown in FIG. 3;
- FIG. 5A is a plan view of a circular type cold-cathode fluorescent lamp as an example of the circular type cold-cathode tube shown in FIG. 3;
- FIG. 5B is a side view of the circular type cold-cathode fluorescent lamp shown in FIG. 3;
- FIG. 6A is a front view of a support illumination unit shown in FIG. 3;
- FIG. 6B is a plan view of the support illumination unit shown in FIG. 6A;
- FIG. 6C is a cross section taken along a line I-I in FIG. 6A;
- FIG. 7 illustrates light incident on a cylindrical subject in the image pick-up device shown in FIG. 3; and
- FIG. 8 illustrates an embodiment of use of the image pick-up device shown in FIG. 3.
- Preferred embodiments of the present invention will be described with reference to the drawings.
- FIG. 3 shows an image pick-up device according to an embodiment of the present invention. The image pick-up device shown in FIG. 3 includes a substantially square subject mounting table1 on which a
subject 2 is mounted, an image pick-upunit 3 for picking up an image of the subject 2 vertically, a circular type cold-cathode tube 4 for illuminating the subject 2, anarm 6 for supporting the image pick-upunit 3 and asupport illumination unit 5 provided in a predetermined position of thearm 6 and composed of a linear type cold-cathode tube 5 a. Thearm 6 is mounted on a predetermined one of corner portions of the subject mounting table 1 and is rotatable about the mounting portion in predetermined directions. - The image pick-up
unit 3, which may be constructed with a CCD camera, is rotatably mounted on an upper end portion of thearm 6. The circular type cold-cathode tube 4 is mounted on a front side of. the image pick-upunit 3 in such a way that the shooting direction of the image pick-upunit 3 becomes the same as the illuminating direction of the circular type cold-cathode tube 4. By integrally arranging the image pick-upunit 3 and the circular type cold-cathode tube 4 in this manner, the subject 2 to be shot by the image pick-upunit 3 is always illuminated uniformly by the circular type cold-cathode tube 4. Incidentally, in order to prevent light from the circular type cold-cathode tube 4 from being directly incident on an image picking up plane of the image pick-upunit 3, the circular type cold-cathode tube 4 has to be arranged behind a front plane of the image pick-upunit 3 or means for preventing direct light emitted by the cold-cathode tube 4 from being incident thereon should be provided. - The support
light source unit 5 is provided to prevent halation from occurring and can be replaced by the circular type cold-cathode tube 4 on demand by using aswitch 11 provided in a predetermined portion of thesubject mounting plate 1. Assuming a case where a reflective original such as OHP (Over Head Projector) sheet is mounted on thesubject mounting plate 1 as thesubject 2, an image picked up by the image pick-upunit 3 becomes a blurred white image due to regular reflection of light emitted by the circular type cold-cathode tube 4 by the reflective original. This phenomenon is called halation. - For example, cold-cathode fluorescent lamps may be used as the circular type cold-
cathode tube 4 and the linear type cold-cathode tube 5 a, respectively. The cold-cathode fluorescent lamp is similar to the well known fluorescent lamp and includes a glass tube, electrodes, filler gas, mercury and a fluorescent member. However, the electrode of the cold-cathode fluorescent lamp is not a filament but a metal member. Since the cold-cathode fluorescent lamp uses not filament but metal member, its duration is long (about 7 to 10 times the duration of the usual fluorescent lamp) and miniaturization thereof is possible. Due to such features of the cold-cathode fluorescent lamp, it is easily possible to realize the fixing structure to the image pick-upunit 3 shown in FIG. 3. Further, since heat generation of the cold-cathode fluorescent lamp itself is small, thermal influence on the image pick-upunit 3 is small. - Now, the illumination system using the circular type cold-
cathode tube 4 will be described in detail with reference to FIG. 4, which is a cross section of the image pick-upunit 3 and the circular type cold-cathode tube 4 shown in FIG. 3. - The image pick-up
unit 3 includes acasing 12 and a lens assembly (ASSY) 13 housed in thecasing 12 for picking up an image of thesubject 2. A required image data (digital data) such as zoomed image of the subject 2 can be read in through thelens assembly 13. A front portion of thelens assembly 13 protrudes from thecasing 12. - The circular type cold-
cathode tube 4 and anannular reflector 7 are provided in such a manner that they surround the front portion of thelens assembly 13 protruded from thecasing 12. Theannular reflector 7 has a generally reversed-U shaped cross section and the circular type cold-cathode tube 4 is arranged within theannular reflector 7. Theannular reflector 7 is fixed to a predetermined portion of the protruded portion of thelens assembly 13 by means of, for example, screws (not shown). An open area (light emitting area) of theannular reflector 7 is covered by an annular scattering/diffusingsheet 8 provided in substantially the same plane as the front surface of thelens assembly 13. A reflecting material forming theannular reflector 7 is, for example, polycarbonate (PC) of high reflection grade. - Direct light from the circular type cold-
cathode tube 4 and lights reflected by theannular reflector 7 are emitted from the open area of theannular reflector 7 in a predetermined direction. Lights emanating from the open area is scattered and diffused by the annular scattering/diffusingsheet 8. Therefore, it is possible to uniformly illuminate the subject 2 with soft light. - The
annular reflector 7 is fixed to the protruded portion of thelens assembly 13 such that the illuminating light emitted from the open area is directed along an optical axis of thelens assembly 13. Therefore, the direction of the illuminating light is always coincident with the direction of the image pick-upunit 3. Preferably, this illumination system is set such that a whole area covered by the image pick-upunit 3 is illuminated by light from theannular reflector 7. In such case, an area to be shot can always be illuminated by light from theannular reflector 7 regardless of the shooting direction of the image pick-upunit 3. - FIG. 5A is a plan view of a circular type cold-cathode fluorescent lamp as an example of the circular type cold-
cathode tube 4 and FIG. 5B is a side view of the same. As shown in FIG. 5A and FIG. 5B, the circular type cold-cathode fluorescent lamp includes acircular glass tube 30 filled with a suitable amount of mercury and inert gas. Both end portions of the circulartype glass tube 30 are bent down andelectrodes circular glass tube 30 is painted with fluorescent material. When a high voltage is applied between theelectrodes electrodes glass tube 30 irradiates the fluorescent material on the inner wall of the circular type cold-cathode fluorescent lamp. Thus, the circular type cold-cathode fluorescent lamp emits light. - When the circular cold-cathode fluorescent lamp shown in FIG. 5A and FIG. 5B is used, luminance of the end portions thereof, in which the
electrodes sheet 8 is provided, the reduction of luminance of the electrode portions is relaxed, so that the subject 2 can be illuminated uniformly. - Now, the illuminating system of the support
light source unit 5 will be described in detail. FIG. 6A and FIG. 6B are a front view and a plan view of the supportlight source unit 5 shown in FIG. 3 and FIG. 6C is a cross section taken along a line I-I in FIG. 6A. - The linear type cold-
cathode tube 5 a is provided in alinear type reflector 16 having a generally U shape cross-section. A light emitting area (open area) of thelinear type reflector 16 is covered by anacrylic lens 17. Direct light from the linear cold-cathode tube 5 a and lights reflected by thelinear reflector 16 pass through thelens 17. Thelens 17 functions to uniformly illuminate the subject 2 with light from the linear type cold-cathode tube 5 a and to protect the linear cold-cathode tube 5 a. - An
upper plate 161 and alower plate 162, which have respectiveaxial protrusions 18, are fixed to an upper portion and a lower portion of thelinear reflector 16, respectively. A pair ofsupport plates 19 each having a bearing for receiving theaxial protrusions 18 are provided fixedly within thearm 6 to support the reflector housing the linear cold-cathode tube 5 a. In detail, theaxial protrusion 18 provided on theupper plate 161 of thelinear reflector 16 is fitted in the bearing formed in atab 191 of theupper support plate 19. A resilient O-ring 20 is provided between the bearing of theupper support plate 19 and theprotrusion 18 formed on theupper plate 161. Similarly, theaxial protrusion 18 provided on thelower plate 162 of thelinear reflector 16 is fitted in the bearing formed in atab 191 of thelower support plate 19. A resilient O-ring 20 is provided between the bearing of theupper support plate 19 and theprotrusion 18 formed on thelower plate 162. Therefore, thelinear reflector 16 is rotatable about theaxial protrusions 18 received in the upper and lower bearings of the upper andlower support plates 19 and rotation angle thereof can be freely fixed by resiliency of the O-ring 20. Although theaxial protrusions 18 and the linear cold-cathode tube 5 a are preferably coaxial, the present invention is not limited thereto. - In the structure of the support light source shown in FIG. 6A to FIG. 6C, the support
light source unit 5 a does not become obstacle in operating thearm 6 since the supportlight source unit 5 a is housed within thearm 6. Further, since thelinear reflector 16 is rotatable about theaxial protrusions 18 within a certain range, an illumination angle of the support light source can be regulated within a certain range in illuminating the subject 2. - Operational merits of the image pick-up device according to the described embodiment will be described briefly.
- An operator mounts a desired subject2 on the
subject mounting plate 1. In the construction shown in FIG. 3, thesingle arm 6 is arranged at the one corner of the subject-mountingplate 1 and, therefore, thearm 6 does not constitute obstacle in mounting the subject 2 on the subject-mountingplate 1. Even when the supportlight source unit 5 a is used in order to avoid halation, the supportlight source unit 5 a does not constitute an obstacle during the operation since the supportlight source unit 5 a is housed in the arm. - When the subject2 mounted on the
subject mounting plate 1 is shot by the image pick-upunit 3, thesubject 2 is uniformly illuminated by light from the circular type cold-cathode tube 4 by merely directing the image pick-upunit 3 to thesubject 2. Therefore, in shooting thesubject 2, the operator is not required to regulate the illumination angle of the circular type cold-cathode tube 4, resulting in that the operability is improved. - When the subject2 is a
cylindrical subject 2 a, it is possible to clearly illuminate an inside of the cylindrical subject. FIG. 7 illustrates illumination light incident on the cylindrical subject. As is clear from FIG. 7,light portion 4 a of the illumination light from the circular type cold-cathode tube 4, which makes a predetermined angle with respect to an optical axis 3 a of the image pick-upunit 3, is incident on the inside of thecylindrical subject 2 a through a circular opening area of thecylindrical subject 2 a. Therefore, the inside of thecylindrical subject 2 a is uniformly and clearly illuminated by thelight portion 4 a. - Now, a utilization of the image pick-up device according to this embodiment shown in FIG. 3 will be described in detail with reference to FIG. 8.
- An output terminal (not shown) for outputting an image data (digital data) obtained by the image pick-up
unit 3 to aprojector 10 is provided in a backside portion of the subject mounting portion of the image pick-up device. The output terminal is connected to a video input terminal (not shown) of theprojector 10 through acommunication cable 10 a. - When a desired subject2 is mounted on the subject mounting table 1 and shot by the image pick-up
unit 3, the image data of the subject 2 is transmitted from the image pick-up device to theprojector 10. In theprojector 10, the image data is enlarged and projected onto a screen (not shown). - In a case where the
subject 2 is a reflective original such as an OHP sheet, halation is prevented by switching the light source unit from the circular cold-cathodelight source unit 4 to the supportlight source unit 5. In switching the light source unit, it is necessary to obtain an optimal illumination by regulating the angles of thelinear reflector 16 shown in FIG. 6A to FIG. 6C and thearm 6. - In the image pick-up device according to the described embodiment, the illumination means fixed to the
image pickup unit 3 is not limited to the circular type cold-cathode tube 4. The illumination means may be any, provided that it is fixed to a predetermined portion of the image pick-upunit 3 in such a way that the illuminating direction thereof to thesubject 2 is substantially coincident with the shooting direction of the image pick-upunit 3. For example, the illumination means may be a generally U shape cold-cathode tube, a linear cold-cathode tube or a combination thereof and may be arranged such that it surrounds a predetermined portion of the image pick-upunit 3. - Further, in the construction shown in FIG. 4, the circular type cold-
cathode tube 4 may be a plurality of circular type cold-cathode tubes having different diameters. In such case, it is possible to increase an amount of light illuminating the subject to thereby acquire a clearer image. - As described hereinbefore, since it is enough to regulate only the shooting direction of the image pick-up unit without need of regulating the illuminating direction according to the present invention, it is possible to provide the image pick-up device having higher operability compared with the conventional image pick-up device.
- Further, since only one arm for supporting the image pick-up unit is required, the subject mounting plate can be utilized efficiently and the design of the image pick-up device can be simple without degrading the appearance thereof.
- Further, since the illumination light can reach a portion of a subject such as an inside of a cylindrical subject, which is impossible by the conventional device, various subjects can be shot.
Claims (6)
1. An image pick-up device comprising:
an image pick-up unit for shooting a subject in a desired direction; and
a light source unit fixed to a predetermined portion of said image pick-up unit in such a way that an illuminating direction of said light source unit is substantially coincident with a shooting direction of said image pick-up unit.
2. An image pick-up device as claimed in claim 1 , wherein said light source unit includes a cold-cathode tube arranged to surround a predetermined portion of said image pick-up unit.
3. An image pick-up device as claimed in claim 2 , wherein said light source unit includes a reflector housing said cold-cathode tube for reflecting light from said cold cathode tube and emitting reflected light in a predetermined direction and a sheet member for scattering and diffusing light emitted from said reflector.
4. An image pick-up device as claimed in claim 2 , wherein said cold-cathode tube is a circular cold-cathode tube.
5. An image pick-up device as claimed in claim 1 , further comprising an arm for supporting said image pick-up unit, an auxiliary light source unit housed in said arm for illuminating said subject and a switch unit for switching between said light source unit and said auxiliary light source unit.
6. An image pick-up device as claimed in claim 5 , wherein said auxiliary light source unit includes a linear cold-cathode tube, a reflector housing said linear cold-cathode tube for reflecting light from said linear cod-cathode tube and emitting light in a predetermined direction and a support portion for rotatably supporting said reflector.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002123808A JP2003319208A (en) | 2002-04-25 | 2002-04-25 | Material presentation device |
JP123808/2002 | 2002-04-25 |
Publications (1)
Publication Number | Publication Date |
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US20030202224A1 true US20030202224A1 (en) | 2003-10-30 |
Family
ID=29243696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/419,738 Abandoned US20030202224A1 (en) | 2002-04-25 | 2003-04-22 | Image pick-up device |
Country Status (4)
Country | Link |
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US (1) | US20030202224A1 (en) |
JP (1) | JP2003319208A (en) |
CN (1) | CN1472589A (en) |
GB (1) | GB2388735B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2410641A (en) * | 2004-01-30 | 2005-08-03 | Samsung Techwin Co Ltd | Video presenter with arched support |
US20100188549A1 (en) * | 2009-01-27 | 2010-07-29 | Seiko Epson Corporation | Image display system and image display method |
US20120314263A1 (en) * | 2011-06-07 | 2012-12-13 | Pfu Limited | Pressing plate |
CN102880876A (en) * | 2012-09-20 | 2013-01-16 | 深圳市盛视科技有限公司 | Seal checking method and seal checking device |
US20140160345A1 (en) * | 2012-12-07 | 2014-06-12 | Pfu Limited | Lighting device and image capturing system |
CN104469072A (en) * | 2014-11-24 | 2015-03-25 | 四川利安社区居民服务有限公司 | Paper adsorption type shooting instrument for store |
US20170090272A1 (en) * | 2015-05-12 | 2017-03-30 | Muneer Ayaad | Foldable camera and projector with code activated controls |
CN109708020A (en) * | 2018-12-29 | 2019-05-03 | 唐劲松 | A kind of LED projection computer AI intelligent eyeshield desk lamp |
Families Citing this family (2)
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CN101908146A (en) * | 2010-06-30 | 2010-12-08 | 李潇君 | Acquisition device for seal impression identification |
TWM482456U (en) * | 2014-03-19 | 2014-07-21 | Xing-Hua Dong | Auxiliary tool for key photographing |
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- 2003-04-24 GB GB0309309A patent/GB2388735B/en not_active Expired - Fee Related
- 2003-04-25 CN CNA031367739A patent/CN1472589A/en active Pending
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US5220400A (en) * | 1990-06-01 | 1993-06-15 | Texas Instruments Incorporated | Container inspection system |
US5247330A (en) * | 1990-08-02 | 1993-09-21 | Canon Kabushiki Kaisha | Image input device |
US5179474A (en) * | 1991-03-21 | 1993-01-12 | Delta Technology Corporation | Viewer for a sorting machine |
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Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2410641A (en) * | 2004-01-30 | 2005-08-03 | Samsung Techwin Co Ltd | Video presenter with arched support |
KR20050077715A (en) * | 2004-01-30 | 2005-08-03 | 삼성테크윈 주식회사 | Video presenter with arch type support |
US7409147B2 (en) | 2004-01-30 | 2008-08-05 | Samsung Techwin Co., Ltd. | Video presenter with arch-type support |
GB2410641B (en) * | 2004-01-30 | 2009-03-25 | Samsung Techwin Co Ltd | Video presenter with arch-type support |
US20100188549A1 (en) * | 2009-01-27 | 2010-07-29 | Seiko Epson Corporation | Image display system and image display method |
US8167441B2 (en) * | 2009-01-27 | 2012-05-01 | Seiko Epson Corporation | Image display system and image display method |
US20120314263A1 (en) * | 2011-06-07 | 2012-12-13 | Pfu Limited | Pressing plate |
US8559071B2 (en) * | 2011-06-07 | 2013-10-15 | Pfu Limited | Pressing plate |
CN102880876A (en) * | 2012-09-20 | 2013-01-16 | 深圳市盛视科技有限公司 | Seal checking method and seal checking device |
US20140160345A1 (en) * | 2012-12-07 | 2014-06-12 | Pfu Limited | Lighting device and image capturing system |
US9491344B2 (en) * | 2012-12-07 | 2016-11-08 | Pfu Limited | Lighting device and image capturing system |
CN104469072A (en) * | 2014-11-24 | 2015-03-25 | 四川利安社区居民服务有限公司 | Paper adsorption type shooting instrument for store |
US20170090272A1 (en) * | 2015-05-12 | 2017-03-30 | Muneer Ayaad | Foldable camera and projector with code activated controls |
CN109708020A (en) * | 2018-12-29 | 2019-05-03 | 唐劲松 | A kind of LED projection computer AI intelligent eyeshield desk lamp |
Also Published As
Publication number | Publication date |
---|---|
GB2388735A (en) | 2003-11-19 |
CN1472589A (en) | 2004-02-04 |
JP2003319208A (en) | 2003-11-07 |
GB2388735B (en) | 2004-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEC VIEWTECHNOLOGY, LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MORIYA, YOSHINOBU;REEL/FRAME:013991/0584 Effective date: 20030415 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |